Novel membranes and process for making them
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United States of America Patent
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Aug 2, 1988
Grant Date -
N/A
app pub date -
Mar 10, 1987
filing date -
Mar 17, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for preparing a microporous membrane, which comprises casting the membrane from a solution comprising a mixture of at least one pore-forming polymer and at least one film-forming polymer, and a solvent for the mixture of polymers, wherein the at least one pore-forming polymer is one which if cast alone would contract to form either large pores or a non-uniform distribution of material.
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